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@@ -17,3 +17,7 @@ htmlcov | |
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| # Autosaved files | ||
| *~ | ||
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| # Files generated by tests | ||
| actual* | ||
| expected* | ||
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| # Copyright 2016 Google Inc. All Rights Reserved. | ||
| # | ||
| # Licensed under the Apache License, Version 2.0 (the "License"); | ||
| # you may not use this file except in compliance with the License. | ||
| # You may obtain a copy of the License at | ||
| # | ||
| # http://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, software | ||
| # distributed under the License is distributed on an "AS IS" BASIS, | ||
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| # See the License for the specific language governing permissions and | ||
| # limitations under the License. | ||
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| from __future__ import (print_function, division, absolute_import, | ||
| unicode_literals) | ||
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| from collections import defaultdict | ||
| import os | ||
| import re | ||
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| from glyphsLib import classes | ||
| from .constants import GLYPHLIB_PREFIX | ||
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| UFO_ORIGINAL_KERNING_GROUPS_KEY = GLYPHLIB_PREFIX + 'originalKerningGroups' | ||
| UFO_GROUPS_NOT_IN_FEATURE_KEY = GLYPHLIB_PREFIX + 'groupsNotInFeature' | ||
| UFO_KERN_GROUP_PATTERN = re.compile('^public\\.kern([12])\\.(.*)$') | ||
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| def to_ufo_groups(self): | ||
| # Build groups once and then apply to all UFOs. | ||
| groups = defaultdict(list) | ||
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| # Classes usually go to the feature file, unless we have our custom flag | ||
| group_names = None | ||
| if UFO_GROUPS_NOT_IN_FEATURE_KEY in self.font.userData.keys(): | ||
| group_names = set(self.font.userData[UFO_GROUPS_NOT_IN_FEATURE_KEY]) | ||
| if group_names: | ||
| for gsclass in self.font.classes.values(): | ||
| if gsclass.name in group_names: | ||
| if gsclass.code: | ||
| groups[gsclass.name] = gsclass.code.split(' ') | ||
| else: | ||
| # Empty group: using split like above would produce [''] | ||
| groups[gsclass.name] = [] | ||
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| # Rebuild kerning groups from `left/rightKerningGroup`s | ||
| # Use the original list of kerning groups as a base, to recover | ||
| # - the original ordering | ||
| # - the kerning groups of glyphs that were not in the font (which can be | ||
| # stored in a UFO but not by Glyphs) | ||
| recovered = set() | ||
| orig_groups = self.font.userData.get(UFO_ORIGINAL_KERNING_GROUPS_KEY) | ||
| if orig_groups: | ||
| for group, glyphs in orig_groups.items(): | ||
| if not glyphs: | ||
| # Restore empty group | ||
| groups[group] = [] | ||
| for glyph_name in glyphs: | ||
| # Check that the original value is still valid | ||
| match = UFO_KERN_GROUP_PATTERN.match(group) | ||
| side = match.group(1) | ||
| group_name = match.group(2) | ||
| glyph = self.font.glyphs[glyph_name] | ||
| if not glyph or getattr( | ||
| glyph, _glyph_kerning_attr(glyph, side)) == group_name: | ||
| # The original grouping is still valid | ||
| groups[group].append(glyph_name) | ||
| # Remember not to add this glyph again later | ||
| # Thus the original position in the list is preserved | ||
| recovered.add((glyph_name, int(side))) | ||
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| # Read modified grouping values | ||
| for glyph in self.font.glyphs.values(): | ||
| for side in 1, 2: | ||
| if (glyph.name, side) not in recovered: | ||
| attr = _glyph_kerning_attr(glyph, side) | ||
| group = getattr(glyph, attr) | ||
| if group: | ||
| group = 'public.kern%s.%s' % (side, group) | ||
| groups[group].append(glyph.name) | ||
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| # Update all UFOs with the same info | ||
| for ufo in self._ufos.values(): | ||
| for name, glyphs in groups.items(): | ||
| # Shallow copy to prevent unexpected object sharing | ||
| ufo.groups[name] = glyphs[:] | ||
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| def to_glyphs_groups(self): | ||
| # Build the GSClasses from the groups of the first UFO. | ||
| groups = [] | ||
| for ufo in self.ufos: | ||
| for name, glyphs in ufo.groups.items(): | ||
| if _is_kerning_group(name): | ||
| _to_glyphs_kerning_group(self, name, glyphs) | ||
| else: | ||
| gsclass = classes.GSClass(name, " ".join(glyphs)) | ||
| self.font.classes.append(gsclass) | ||
| groups.append(name) | ||
| if self.minimize_ufo_diffs: | ||
| self.font.userData[UFO_GROUPS_NOT_IN_FEATURE_KEY] = groups | ||
| break | ||
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| # Check that other UFOs are identical and print a warning if not. | ||
| for index, ufo in enumerate(self.ufos): | ||
| if index == 0: | ||
| reference_ufo = ufo | ||
| else: | ||
| _assert_groups_are_identical(self, reference_ufo, ufo) | ||
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| def _is_kerning_group(name): | ||
| return (name.startswith('public.kern1.') or | ||
| name.startswith('public.kern2.')) | ||
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| def _to_glyphs_kerning_group(self, name, glyphs): | ||
| if self.minimize_ufo_diffs: | ||
| # Preserve ordering when going from UFO group | ||
| # to left/rightKerningGroup disseminated in GSGlyphs | ||
| # back to UFO group. | ||
| if not self.font.userData.get(UFO_ORIGINAL_KERNING_GROUPS_KEY): | ||
| self.font.userData[UFO_ORIGINAL_KERNING_GROUPS_KEY] = {} | ||
| self.font.userData[UFO_ORIGINAL_KERNING_GROUPS_KEY][name] = glyphs | ||
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| match = UFO_KERN_GROUP_PATTERN.match(name) | ||
| side = match.group(1) | ||
| group_name = match.group(2) | ||
| for glyph_name in glyphs: | ||
| glyph = self.font.glyphs[glyph_name] | ||
| if glyph: | ||
| setattr(glyph, _glyph_kerning_attr(glyph, side), group_name) | ||
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| def _glyph_kerning_attr(glyph, side): | ||
| """Return leftKerningGroup or rightKerningGroup depending on the UFO | ||
| group's side (1 or 2) and the glyph's direction (LTR or RTL). | ||
| """ | ||
| side = int(side) | ||
| if _is_ltr(glyph): | ||
| if side == 1: | ||
| return 'rightKerningGroup' | ||
| else: | ||
| return 'leftKerningGroup' | ||
| else: | ||
| # RTL | ||
| if side == 1: | ||
| return 'leftKerningGroup' | ||
| else: | ||
| return 'rightKerningGroup' | ||
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| def _is_ltr(glyph): | ||
| # TODO: (jany) have a real implem? | ||
| # The following one is just to make my simple test pass | ||
| if glyph.name.endswith('-hb'): | ||
| return False | ||
| return True | ||
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| def _assert_groups_are_identical(self, reference_ufo, ufo): | ||
| first_time = [True] # Using a mutable as a non-local for closure below | ||
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| def _warn(message, *args): | ||
| if first_time: | ||
| self.logger.warn('Using UFO `%s` as a reference for groups:', | ||
| _ufo_logging_ref(reference_ufo)) | ||
| first_time.clear() | ||
| self.logger.warn(' ' + message, *args) | ||
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| # Check for inconsistencies | ||
| for group, glyphs in ufo.groups.items(): | ||
| if group not in reference_ufo.groups: | ||
| _warn("group `%s` from `%s` will be lost because it's not " | ||
| "defined in the reference UFO", group, _ufo_logging_ref(ufo)) | ||
| reference_glyphs = reference_ufo.groups[group] | ||
| if glyphs != reference_glyphs: | ||
| _warn("group `%s` from `%s` will not be stored accurately because " | ||
| "it is different from the reference UFO", group, | ||
| _ufo_logging_ref(ufo)) | ||
| _warn(" reference = %s", ' '.join(glyphs)) | ||
| _warn(" current = %s", ' '.join(reference_glyphs)) | ||
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| def _ufo_logging_ref(ufo): | ||
| """Return a string that can identify this UFO in logs.""" | ||
| if ufo.path: | ||
| return os.path.basename(ufo.path) | ||
| return ufo.info.styleName |
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